Q1. Sum of the probability of happening and not happening of an event is:
- None of these
Q2. The maximum probability of an event of a trial is:
- Lies between 0 and 1.
Q3. If the probability of winning a game is 0.9 then, the probability of losing the game is
Q4. In an experiment, 100 drawing pins were dropped on a floor. 73 landed point up and the rest landed point down. A pin is selected at random and dropped. What is the probability that the pin will land point down?
Q5. The percentages of marks obtained by a student in six unit tests are given below: Unit test I II III IV V VI Percentage of marks 53 72 28 46 67 61 If a test is selected at random then, the probability that the student gets more than 60% marks in the test is
Q6. An event for an experiment is defined as
- Collection of happenings and non-happenings
- Collection of probabilities
- Collection of odd event and even event of the experiment
- Collection of some outcomes of the experiment
Q7. A, B, C and D are the only possible outcomes of a trial. So if P(A) + P(D) = 0.75, then P(C) + P(B) =
Q8. In a sample survey of 640 people, it was found that 400 people have a secondary school certificate. If a person is selected at random, the probability that the person does not have such certificate is
Q9. In a series of 6 cricket matches, the number of runs scored by the captain of a team are 54, 32, 48, 55, 29, 35. So in the next match, the probability that he will cross the half century is
Q10. In a survey of 364 children aged 2-4 years, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is: